Pull-socket.



F. L; ROWNTRBE.

PULL SOCKET.

APPLICATION FILED 001224, 1911.

hmm

Tdall 'whom it mag/concern.'-

\ a 'citizen of the the same in certain features UNTED STATE@ FRANK n ROWNTREE, `or HARTFORD.

ELECTRIC CoMrANY, or HARTFORD,

lirec'lIcUT.v

` Application l mg is "a specification.

MyI invention relates 'to electric lamp sockets a'nd 'particularly to pull sockets, the

`object yof myy invention 'being toimprove illustrated inthe accompanying .drawing in f whlch,

l2l formed by strikingup tact..vvings v20 of the switch Figure l is a vertical section through a socket.; Fig. 2 is a similar section through the socket bod)-y with 4thefswitch parts detached; and Fig. 3`is-a perspective ofthe upper *insulating related thereto. i i.

The present socket "is of the `type ihwhich an insulating base' `(here comprising but-tons A and B)v carlying center 1() andishell ll lamp contacts is inclosed within a ,casing 12 with insulating lining `13. The shell contact 11 is continually in the liiie circuit through the combined spacing b'ar and.

Wire terminal 14. while the center contact l0 is connected with the other line terminal' l5 through a switch mechanism. This switch mechanism is mounted upon a stepped spindle 1G normally held against rotation by a rectangular head l7 seated in a rectangu` lar recess 1S in the button l The switch member 1S) comprises oppositely angled contact Wings 20 stamped up' from the hubbed plate 2l and passing through an insulating disk 22. ln the on position of the switch these contact wings4 2 0 electrically engageI on the one hand, the line terminal 23' (which is connected by screw 24 with wire terminal l5) and on the other hand, the center contact connecting strip 2534 which is connected by rivet QG- 'with center -contact 10. The

rswitchmember 19 is rotated step by step by the ratchet 27 fast with pull chain rail 28, the upwardly projecting ratchet teeth 9 engaging the radial e'dges of the plate the contact wings lodges 3() on the button hub, over which the conpiece 19 ride` and thus not only insure a sharp make and break of the circuit, but also prevent the 20. YThe inclined A form a ratchet Specification of Letters Patent. led October 24, 1911.

of construction rai-nar ortica.

CONNECTICUT, ASSIGNOR TO THE `ARROW' CONNECTICUT. A CORPORATION OU CON# PULL-SOCKET.

serial No. 656,389.

return of the 27 under the influence of the ratchet spring 3l. The latter it will benoted is secured at one end to the ratchet 27 by the tongue 32, on the latter and atl the other end to `the head 17 ofthe spindle by the down turned end 33 of the spring which enters theperforation 34 in the head.

To adjust the screw driver in the transverse slot 35-and longitudinally displaced until 1t is clear of `recess 18, whereupon 1t may be turned and v after the desired spring tension,l `is secured button and vcertain parts the head is reseated. 1t will be noted that upon the longitudinal displacement of the spindle, the small'upper end thereofl passes up through the flanged insulating bushing 3G which lines the rivet 26 and at the same time the spring 37, which is engaged between the lower face of the bushing and the shoulder and thus serves to return the seat in the recess 18.

The chain 39 passes out of the casing,"T l2 through the chain bell 40 which detachably engages the spacingbar 41 in customary7 manner. An upwardly projecting lug 42 'cn the bell engages the side of the butt-on A and serves to properly position the bell with relation thereto. This arrangement of the lug 42 is of particular value where pull and key sockety bodies are mounted interchange spindle to its abi)7 in the same. shell.

The construction described presents se\- eral advantages, among which may be noted the facility with which the center contact 10 and conducting plate 25 are secured together by means of they rivet 26; the insulating bushing 3G which completely7 insnlates the spindle 1G from the center contact and holding the spindle rigid; the.arrangenunt of the stop lug the return spring spindle after the ment.v

I claim as my invention 1. A pull socket having insulatin',jY hutions spaced apart, au interposed switch mechanism. a disp'ilacable spindle upon which said switch mechanism is mounted. a center lamp contact. with perforated hase in the switch circuit. a hollow'securing rire! Patented Apr. 23, 1912.

switch piece withl the ratcheto'n the detachable .chain bell passing through said base to hold said'contension of the Aspring 3l, the head 17 of the spindle is engaged by a' 38 of the spindle,is compressed tact in'po'sition, and an insulating bushing v lining said rivet and forming a bearing for stantially as described.

vthe adjacent en'd of the switch spindle, sub- 2. A pull socket having 'insulating buttons spaced apart, an interposed switch mechanism, a displaceable spindle. ,uponl which said switch mechanism is mounted, a center lamp'contact on'the lamp -side of one of said insulating buttons," a switch contact on the other side of said button, a hollow rivet passing through said lamp and switch contacts and serving to electrically rivet passin lthrough-said button and serving not o y Ato mechanically secure said contacts thereto butalso to electrically con neet said contacts,'substantially as described.

4. In a pull socket, an insulating button,

1 a ycenter lamp contact on-one face thereof and a. switch contact on'the opposite face of said, button, in combination with; a hol#l low rivet passing through said lbutton and serving not only to mechanically secure said contactsthereto but also to electrically con# nect said-contactstogether with an insulating bushing lining said rivet anda switch- Copie's of this patent may be obtained'for of two subscribing witnesses.

spindle journaled in' said bushing, 4for .the

5.;In a pull socket, an'insulating button,`

'a center lamp contact on one face thereof and a switch Contact on the 'opposite face of said button, in combination with ahollowrivet, passing through said button and serving-not only to mechanically secure said contacts thereto but also to electrically connect said contacts, together with a 'hanged bushing liningsaid rivt, a switch spindle Apassing throughV said bushingand a return sl ring on said spindle bearingagainstthe ange'of said bushing- 6. In a pull socket havinginsulating buttons` spaced apart, an interposed switch mechanism, a, dis'placeable stepped spindle on the larger diameter of which said switch mechanismis mounted', a center lamp acontact and a switch 'contact on' opposite "sides ing the, same, an insulatin Abushing therefor iny which the reduced en of said spindle has its bearing, together with a return spring mounted on said. reduced end of thespindle and abutting atone end against thelarger 'diameter of the spindle and at the other end Y against.said-bushing.`

-In'testimony whereof Ihave signed my name to this specification, in the presence FRANK L.- ROWNTREE.

Witnessesz' BENJ. PERKINS; H. M. SAUNDERS.

v-e cents each, by addressing the Commissioner of Patents, Washington, D. Ci g a of one of said bttons, a hollow rivet unit- Y 

